1
Published 2001
OECD Publishing

2
Published 2015
OECD Publishing

3
Published 2014
State Revenue Service

4
Published 2015
Hellenic Institute of Internal Auditors

5
Published 2011
OECD Publishing

6
Published 2010
OECD Publishing

7
Published 2010
OECD Publishing

8
Published 2010
OECD Publishing

10
Published 2016
Autoridade Tributária e Aduaneira

11
Published 2019
OECD Publishing

12
Published 2007
Anders Colliander

13
Published 2010
OECD Publishing

14
Published 2010
OECD Publishing

15
Published 2010
OECD Publishing

16
Published 2010
OECD Publishing

17
Published 2011
OECD Publishing

19
Published 2011
OECD Publishing